ghpk Installs Car GPS Tracker Easy Install Video on Hyundai Santro In India.
This is a quick video on How to Wire GPS Tracker with Fuel Cut Relay in Car.
Installing such a device without proper knowledge can be Dangerous.
Please seek professional Help for such Install.
Instead of Installing the Relay on Fuel Pump wires, I prefer cutting power to ECU of car, which will stop the engine and would confuse the thief about what actually went wrong.
I've read somewhere Fuel Lines were jump connected by thieves when they found the fuel system was remotely shut down.
Cutting the ECU supply will create a more complex job for them to restore and should give you and police more time to reach and nab the thief or atleast your stranded car.
Such Devices are now easily available on eBay India Between 2000 - 3000 INR depending on features.